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The inner and outer circumference of a circular ring is 22 cm and 44 cm, respectively. What is the thickness of the ring?’

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  1. The thickness of the ring is 3.5 cm.

    Circumference of circle is 2 Γ— pi Γ— r

    The inner circumference of a circular ring is 22 cm.

    So, 2 Γ— pi Γ— r = 22 cm.

    β‡’ r = = 3.5 cm.

    The outer circumference of a circular ring is 44 cm.

    So, 2 Γ— pi Γ— r = 44 cm.

    β‡’ r = = 7 cm.

    So, The thickness of the ring = 7 – 3.5 = 3.5 cm.

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